Comb



FIG. 1 is a perspective view of a comb showing our design;

FIG. 2 is a front elevational view, it being understood that the opposite rear elevational view is a mirror image;

FIG. 3 is a top plan view;

FIG. 4 is a bottom plan view;

FIG. 5 is a left end elevational view; and,

FIG. 6 is a right end elevational view. 

The ornamental design for a comb, as shown and described. 